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Methodology of the acoustic experiment for studying the aerodynamic noise of wind turbine blade segments

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Category: Content №4 2025

Last Updated on 26 August 2025

Published on 30 November -0001

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Authors:

S. V. Aleksieienko*, orcid.org/0000-0003-0320-989X, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

A. Yu. Dreus, orcid.org/0000-0003-0598-9287, Oles Honchar Dnipro National University, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

L. V. Nakashydze, orcid.org/0000-0003-3990-6718, Oles Honchar Dnipro National University, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

V. A. Derbaba, orcid.org/0000-0002-3918-2177, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

S. A. Zolotarenko, orcid.org/0009-0008-5291-4206, Dnipro University of Technology, Dnipro, Ukraine

* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

повний текст / full article

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2025, (4): 071 - 078

https://doi.org/10.33271/nvngu/2025-4/071

Abstract:

Purpose. This work focuses on developing and implementing the methodology for studying the aerodynamic noise generated by the rotor of a wind turbine. The acoustic characteristics of this noise are analyzed using a blade segment with NACA0012 airfoil. The study addresses the ongoing challenge of reducing wind turbine noise in renewable energy systems.

Methodology. The aerodynamic noise of a wind turbine blade segment was experimentally investigated under laboratory conditions in an anechoic chamber. The measurement procedure complies with the national standard DSTU GOST ISO 5725-1:2005.

Findings. The paper provides a brief overview of existing approaches to studying aerodynamic noise from wind turbines and presents a custom-designed experimental setup for studying acoustic noise characteristics of blade segments in an anechoic chamber. A method is proposed for analyzing both the acoustic signals of interest and the background noise components. Sound pressure levels were measured, and spectral characteristics of the noise generated by the blade segment with NACA0012 airfoil were analyzed in the presence of background noise. The method demonstrated effective operability for laboratory-based acoustic studies.

Originality. The proposed method represents an original approach that differs from the traditional ones, in which test sections are integrated into an anechoic acoustic environment. Unlike conventional methods that assume a stationary model position and reversed flow conditions, this setup simulates the rotational motion of the blade airfoil. This enables a more realistic replication of operational rotor conditions and yields experimental data that better reflect actual aerodynamic noise behavior.

Practical value. The developed methodology and experimental setup are applicable to parametric studies of various blade profiles to identify noise-reducing blade modifications. The results are also valuable for validating numerical models of aerodynamic noise prediction for turbine blades.

Keywords: renewable energy, wind turbines, aerodynamic noise, acoustic experiment, noise spectra

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